Professor Peter Woodward of Heriot-Watt University in Edinburgh said there is a risk the lines may not be able to cope with "new problems" thrown up by the higher speeds with times between London and Birmingham cut to 49 minutes.
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High-speed train safety questioned
A SCOTTISH academic has claimed the HS2 high-speed railway plans may suffer track failure and derailments if trains are allowed to travel on it at speeds of 250mph.
